UKIP's economics spokesman Patrick O'Flynn blew open simmering tensions within the party in an interview with The Times, saying Mr Farage was no longer the "cheerful, ebullient, cheeky, daring" politician of recent times.
Mr O'Flynn said the UKIP leader's behaviour risked the party being seen as an "absolute monarchy" and blamed Mr Farage's "aggressive" and "inexperienced" advisers.
He called for Mr Farage, who lives in Kent, to adopt a "much more consultative and consensual leadership style".
Mr O'Flynn's comments come after Mr Farage was widely mocked for resigning as leader after failing to win the South Thanet seat he stood for in the General Election, only to be reinstated three days later after the party's National Executive Committee rejected his resignation.
More top news
36-year-old Alexander Stern was last seen in the Bull Inn in Sonning, at around 7.30pm on Saturday 11 January.
The review reportedly says there is ‘considerable risk’ that the project’s cost will rise by 20% beyond current estimates.
Monday's weather for the east